PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-02:57:30
G01     110.4          21.7                7.1 +/-    1.72      14.9 +/-    1.72  0.030 / 0.030
G07     95.2           63.0                6.4 +/-    0.91       7.1 +/-    0.91  0.030 / 0.030
G08     42.5           24.5                4.2 +/-    1.80       8.3 +/-    1.80  0.150 / 0.110
G09     172.7          15.7                5.7 +/-    1.31      14.0 +/-    1.31  0.070 / 0.140
G11     103.0          44.2                6.9 +/-    0.62       9.4 +/-    0.62  0.050 / 0.080
G13     313.3          25.9                3.8 +/-    1.83       7.2 +/-    1.83  0.040 / 0.060
G17     202.2          32.0                7.4 +/-    0.92      12.4 +/-    0.92  0.070 / 0.070
G28     291.0          54.3                6.1 +/-    2.11       7.3 +/-    2.11  0.060 / 0.080
G30     348.2          71.5                5.3 +/-    0.69       5.5 +/-    0.69  0.110 / 0.080